Thank you for your feedback on the control, we really appreciate it.
With regard to the slowness that you observe, can you please describe a bit more the scenario in which you observe it? If it is a big record set with not many matches in columns and rows, this slowness is expected, as this results in creating a quite large pivotized table.
We have made the pivot engine with a lot of thought on performance and as for now, this is the best we can get, but of course, if there is an option in the future for improving its speed, we will consider it.
the Telerik team
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